江苏新沂高流地区土壤地球化学特征及找矿预测  

Soil geochemical characteristics and prospecting prediction in Gaoliu area,Xinyi City,Jiangsu Province

作　　者：季明明 孙清钟[1] 徐旭峰[1] 张少琴[1] 常艳[2] Ji Mingming;Sun Qingzhong;Xu Xufeng;Zhang Shaoqin;Chang Yan(Geological Survey of Jiangsu Province,Nanjing 210018,Jiangsu,China;No.3 Bureau of China Metallurgical Geology Bureau,Taiyuan 030000,Shanxi,China)

机构地区：[1]江苏省地质调查研究院,江苏南京210018 [2]中国冶金地质总局三局,山西太原030000

出　　处：《地质学刊》2024年第1期40-48,共9页Journal of Geology

基　　金：中国地质调查局“中国矿产地质志”项目(DD20221695,DD20190379,DD20160346);江苏省地质勘查专项资金项目“江苏省矿产地质与区域成矿规律综合研究”(苏财建2018[96]号)。

摘　　要：在总结江苏新沂高流地区地质特征的基础上,结合区内1∶10000土壤地球化学调查工作,系统研究该区元素含量及组合特征,并进行找矿预测。异常结果显示该区Au、Ag、Cu、Mo、Pb、Zn、As、Sn等单元素地球化学异常明显,其中Au、Ag、Mo 3个元素的异常强度和分带性均好,其形态分布受NNE向构造破碎和碱长花岗岩体等因素制约。在研究区共圈定了14处综合异常,通过异常评价,位于同一断裂带附近的3处异常成矿地质条件优越;对综合异常开展地球化学剖面查证工作,结果显示其中1处Au、Cu等元素峰值均位于NNE向断裂带中心位置。结合该区成矿地质条件和土壤地球化学异常特征,初步总结了研究区金、多金属矿找矿标志,为该区进一步找矿提供间接依据。Based on the geological characteristics and 1∶10,000 soil geochemical survey in Gaoliu area,Xinyi City,Jiangsu Province,content and combination of elements have been researched systematically and prospecting forecast has been carried through.The results show that the geochemical anomalies of single elements such as Au,Ag,Cu,Mo,Pb,Zn,As and Sn are obvious in this area,among which the anomaly intensity and zonation of Au,Ag and Mo are good,and their morphological distribution is restricted by NNE-trending structural fragmentation and alkali feldspar granite mass.A total of 14 comprehensive anomalies has been identified in the survey area,among which three well-evaluated anomalies are located near the same fault zone with excellent mineralization geological conditions.The geochemical profile verification of the comprehensive anomaly shows that the peaks of Au,Cu and other elements are located in the center of the NNE-trending fault zone.Based on the metallogenic geological conditions and geochemical characteristics of soil,the prospecting criteria of gold and polymetallic deposits in this area are summarized preliminarily,which can provide indirect basis for further prospecting in this area.

关 键 词：土壤地球化学调查 异常评价 找矿预测 新沂 

分 类 号：P632.3[天文地球—地质矿产勘探]